1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
|
#include "lv2/core/lv2.h"
#include <iostream>
namespace {
const char * ACCELERATION_URI = "https://www.airwindows.com/acceleration";
enum PortIndex {
ACCELERATION_LIMIT,
ACCELERATION_DRYWET,
ACCELERATION_IN_L,
ACCELERATION_IN_R,
ACCELERATION_OUT_L,
ACCELERATION_OUT_R,
};
class Acceleration {
public:
Acceleration(double rate)
: rate(rate)
{
}
void connect_port(uint32_t port, void * data)
{
switch (port) {
case ACCELERATION_LIMIT:
limit = (const float *) data;
break;
case ACCELERATION_DRYWET:
drywet = (const float *) data;
break;
case ACCELERATION_IN_L:
in[0] = (const float *) data;
break;
case ACCELERATION_IN_R:
in[1] = (const float *) data;
break;
case ACCELERATION_OUT_L:
out[0] = (float *) data;
break;
case ACCELERATION_OUT_R:
out[1] = (float *) data;
break;
default:
std::cerr << "Invalid port " << port << ": ignoring." << std::endl;
}
}
void run(uint32_t num_samples)
{
for (auto i = 0u; i < num_samples; i++) {
*out[0]++ = *in[0]++ * *limit;
*out[1]++ = *in[1]++ * *limit;
}
}
private:
double rate;
const float * limit;
const float * drywet;
const float * in[2];
float * out[2];
};
LV2_Handle instantiate(
const LV2_Descriptor * d,
double rate,
const char * path,
const LV2_Feature * const * features)
{
return new Acceleration{rate};
}
void connect_port(
LV2_Handle instance,
uint32_t port,
void * data)
{
auto accel = static_cast<Acceleration *>(instance);
accel->connect_port(port, data);
}
void activate(LV2_Handle instance)
{
}
void run(LV2_Handle instance, uint32_t num_samples)
{
auto accel = static_cast<Acceleration *>(instance);
accel->run(num_samples);
}
void deactivate(LV2_Handle)
{
}
void destroy(LV2_Handle instance)
{
delete static_cast<Acceleration *>(instance);
}
const void * extension_data(const char * uri)
{
return nullptr;
}
const LV2_Descriptor descriptor = {
ACCELERATION_URI,
instantiate,
connect_port,
activate,
run,
deactivate,
destroy,
extension_data
};
} // anon namespace
LV2_SYMBOL_EXPORT
const LV2_Descriptor * lv2_descriptor(uint32_t idx)
{
if (idx == 0)
return &descriptor;
return nullptr;
}
|
